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Microchip Technology AT34C02-10TI-1.8
- Part No.:
- AT34C02-10TI-1.8
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AT34C02-10TI-1.8.pdf
- Description:
- IC EEPROM 2KBIT I2C 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,149
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Product details
Overview
AT34C02-10TI-1.8 from Microchip Technology (formerly Atmel) is a 2 Kbit (256 × 8) I²C-compatible serial EEPROM with permanent software write protection for the first 1K bits and hardware write protection via the WP pin. It operates from 1.8 V to 5.5 V, supports 100 kHz I²C communication at 1.8 V, features 16-byte page writes, and delivers 1 million write cycles with 100-year data retention - ideal for industrial sensor calibration storage and embedded configuration memory.
For engineers reviewing the AT34C02-10TI-1.8 datasheet, AT34C02-10TI-1.8 pinout, AT34C02-10TI-1.8 application, or AT34C02-10TI-1.8 equivalent, key selection considerations include its 1.8 V minimum supply, dual-mode write protection (software + hardware), TSSOP-8 packaging, 100 kHz I²C timing at low voltage, and automotive-grade temperature range (–40°C to +85°C).
Technical Context
The AT34C02-10TI-1.8 implements a two-wire (I²C) serial interface with Schmitt-triggered, noise-filtered SDA and SCL inputs. Its internal architecture includes an 8-bit address counter, Y/X decoders, serial control logic, and high-voltage pump/timing circuitry for EEPROM write operations.
Write protection is implemented in two independent layers: a one-time-programmable software lock for addresses 00H–7FH (enabled via 0110 control byte with WP = GND/floating), and hardware-level array-wide protection activated by pulling WP = VCC. Both mechanisms disable writes while permitting reads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Size | 2048 bits (256 words × 8 bits), organized as 16 pages of 16 bytes each - enables efficient page-write firmware updates without full-array erase. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct interfacing with 1.8 V logic systems and mixed-voltage microcontrollers without level shifters. |
| I²C Clock Frequency | 100 kHz max at 1.8 V - ensures reliable communication in ultra-low-power battery-operated devices. |
| Write Cycle Time | 5 ms maximum - defines minimum interval between successive write commands; critical for real-time logging latency budgeting. |
| Endurance | 1 million write cycles - guarantees long-term reliability in field-updatable parameter storage (e.g., metering, calibration, settings). |
| Data Retention | 100 years at +25°C - ensures nonvolatile data integrity over product lifetime without refresh. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood applications requiring extended thermal stability. |
Pinout & Package
AT34C02-10TI-1.8 is housed in an 8-lead Thin Shrink Small Outline Package (TSSOP), 3.0 mm × 4.4 mm body, 0.65 mm pitch, lead-free and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0–A2 | Device Address Inputs | Hard-wired inputs enabling up to eight AT34C02 devices on a single I²C bus; A2:A1:A0 define unique 3-bit slave address suffix. |
| SDA | Serial Data I/O | Open-drain bidirectional line for I²C data transfer; requires external pull-up; supports wire-OR with other open-drain devices. |
| SCL | Serial Clock Input | Positive-edge clock input for data sampling; negative-edge clock output; synchronizes all read/write transactions. |
| WP | Hardware Write Protect | Active-high enable for full-array write lock; when tied to VCC, blocks all writes regardless of software protection state. |
| VCC | Power Supply | Primary supply rail (1.8 V–5.5 V); powers internal logic, EEPROM array, and high-voltage pump during write cycles. |
| GND | Ground Reference | System ground return path; required for stable operation and noise immunity of internal analog circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Permanent Software Write Protection | Irreversible lock for first 1K bits (00H–7FH) via 0110 control byte - prevents accidental or malicious corruption of critical boot parameters. |
| Hardware Write Protection | Full-array lock enabled by WP = VCC - provides system-level security independent of firmware state or power cycling. |
| Low-Voltage Operation | Guaranteed 100 kHz I²C functionality down to 1.8 V - eliminates need for voltage translators in modern ultra-low-power SoC designs. |
| 16-Byte Page Write | Reduces write overhead by up to 16× vs. byte-write mode - accelerates bulk configuration saves (e.g., sensor offset tables, network keys). |
| Noise-Suppressed Inputs | Schmitt-trigger + filtering on SDA/SCL - rejects >100 ns glitches, enabling robust operation in electrically noisy industrial environments. |
Applications
| Industrial Sensor Calibration | Smart Meter Configuration Storage |
|---|---|
|
Use Scenario: Storing factory-trimmed ADC gain/offset coefficients and temperature compensation tables in environmental sensors. IC Role / Device Role / Timing Role: Nonvolatile configuration register holding persistent calibration data accessed at power-up and during self-test routines. Use Value: Enables field-deployable sensors to retain metrological accuracy across 10+ year lifetimes without battery-backed RAM. |
Use Scenario: Saving tariff schedules, billing registers, and communication module credentials in electricity/water/gas meters. IC Role / Device Role / Timing Role: Secure, tamper-resistant parameter store accessed via microcontroller I²C during meter initialization and firmware updates. Use Value: Supports regulatory compliance (e.g., ANSI C12.19) with guaranteed 1M write cycles and 100-year data retention under wide temperature swings. |
| Automotive Body Control Module | IoT Edge Device Settings |
|
Use Scenario: Storing seat/mirror position presets, lighting profiles, and diagnostic fault logs in vehicle BCMs. IC Role / Device Role / Timing Role: Dual-protected EEPROM used for user-configurable nonvolatile memory accessible across ignition cycles. Use Value: Hardware WP pin prevents firmware update corruption during CAN bus activity; software lock safeguards factory defaults. |
Use Scenario: Holding Wi-Fi SSID/password, OTA update keys, and device-specific identifiers in battery-powered edge nodes. IC Role / Device Role / Timing Role: Low-power I²C EEPROM interfaced directly to 1.8 V MCU GPIOs for secure credential storage. Use Value: 1.8 V operation extends battery life; 16-byte page writes minimize active time during credential provisioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial EEPROM applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| M95M02-RDW6TP/K | 2 Mbit SPI interface, 2.5–5.5 V supply, no software write protection, 5 ms write cycle | Requires SPI host interface and separate level-shifting for 1.8 V systems; lacks dual-layer protection | Select when higher density and SPI-native host architecture outweigh loss of I²C compatibility and write-protection granularity. |
| 24AA02E48-I/MS | 2 Kbit I²C, 1.8–5.5 V, integrated EUI-48 MAC address, no software write protect, 5 ms write cycle | Includes factory-programmed unique ID; hardware WP only; not certified for automotive temp range | Prefer for networking devices needing IEEE MAC address; avoid where permanent first-half software lock is mandatory. |
Compared with M95M02-RDW6TP/K and 24AA02E48-I/MS, the AT34C02-10TI-1.8 uniquely combines 1.8 V I²C operation, irreversible software write protection for half the array, and automotive-grade temperature qualification - making it optimal for safety-critical industrial and automotive parameter storage where layered data integrity is non-negotiable.
Availability
AT34C02-10TI-1.8 is available at Aetrix Electronics and suitable for industrial sensor calibration, smart meter configuration storage, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT34C02-10TI-1.8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with a focus on reliability, longevity, and embedded system integration.
The AT34C02 series belongs to Microchip's legacy serial EEPROM portfolio, designed specifically for industrial and automotive applications demanding robust nonvolatile storage with multi-layer write protection and extended temperature operation.
FAQ
What is the minimum operating voltage for AT34C02-10TI-1.8?
The AT34C02-10TI-1.8 is rated for operation from 1.8 V to 5.5 V. Its guaranteed 100 kHz I²C timing and full functionality-including write operations-are specified at 1.8 V, making it compatible with modern ultra-low-power microcontrollers and SoCs without level translation.
Does AT34C02-10TI-1.8 support page writes, and what is the page size?
Yes, the AT34C02-10TI-1.8 supports 16-byte page writes. The 2 Kbit memory is internally organized into 16 pages of 16 bytes each. This allows up to 16 sequential bytes to be written in a single I²C transaction, significantly reducing write overhead compared to byte-wise programming.
How does the software write protection work on AT34C02-10TI-1.8?
The AT34C02-10TI-1.8 implements permanent software write protection for addresses 00H–7FH (first 1K bits). It is enabled by sending a special 0110 control byte with WP = GND or floating. Once programmed, this protection cannot be reversed-even after power cycling-and prevents writes to that region while allowing full read access.
What package type is used for AT34C02-10TI-1.8?
The AT34C02-10TI-1.8 uses an 8-lead Thin Shrink Small Outline Package (TSSOP), designated as 8A2 per Microchip's ordering nomenclature. It measures 3.0 mm × 4.4 mm with 0.65 mm lead pitch and is lead-free and halogen-free compliant.
Can AT34C02-10TI-1.8 operate in automotive temperature ranges?
The AT34C02-10TI-1.8 is specified for industrial temperature range (–40°C to +85°C), not extended automotive (–40°C to +125°C). For automotive-grade operation, Microchip offers the AT34C02N-10SE-1.8 variant, which is explicitly qualified to –40°C to +125°C and carries the "E" suffix in the ordering code.
AT34C02-10TI-1.8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- EEPROM
- Technology:
- EEPROM
- Memory Size:
- 2Kbit
- Memory Organization:
- 256 x 8
- Memory Interface:
- I2C
- Clock Frequency:
- 400 kHz
- Write Cycle Time - Word, Page:
- 10ms
- Access Time:
- 900 ns
- Voltage - Supply:
- 1.8V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
AT34C02-10TI-1.8 FAQ
1.How can I place an order for AT34C02-10TI-1.8 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT34C02-10TI-1.8 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AT34C02-10TI-1.8 reliable?
The price and inventory of AT34C02-10TI-1.8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT34C02-10TI-1.8 is usually 5 days.
3.What payment methods are accepted for AT34C02-10TI-1.8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT34C02-10TI-1.8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT34C02-10TI-1.8?
AT34C02-10TI-1.8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT34C02-10TI-1.8 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AT34C02-10TI-1.8?
For technical support, including AT34C02-10TI-1.8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT34C02-10TI-1.8 requirements.
6.How does Aetrix verify that AT34C02-10TI-1.8 is sourced from the original manufacturer or authorized distributors?
All AT34C02-10TI-1.8 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AT34C02-10TI-1.8 meets industry standards.
7.What is the process for return or replacement of AT34C02-10TI-1.8?
All AT34C02-10TI-1.8 units undergo pre-shipment inspection (PSI). If there is an issue with AT34C02-10TI-1.8, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AT34C02-10TI-1.8 part is unused and in its original packaging.
Return procedure for AT34C02-10TI-1.8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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